Improvement in heating-stoves



FERDINAND E.CHATARD,JL

Heating Stove.

N0. 122,812, l Patented .Ian.16,872.

wimsses l t INVENTon.

(154,) 2 sheexs--sheex 2. FERDINAND E. CHATAR'D, Jr.

Heating Stove.

No, 122,812. V y 4Patternedmmm,1872.

wlmes'sfs. INVENTM.A

df" l @y UNITED STATES PATENT OFFICE.

FERDINAND E. GHATARD, JR., OF BALTIMORE, MARYLAND.

IMPROVEMENT IN HEATING-STOVES.

Specification forming part of Letters Patent No. 122,812, dated January16, 1872.

I, FERDINAND E. GHATARD, J r., of Baltimore, in the county of Baltimoreand State of Maryland, have invented certain Improvements in Furnacesand Stoves employed for heating purpose-s, of which the following' is aspecification:

N ctt-ure and Objects of the Invention.

, being lifted up and removed from its cylindrical support. The hollowcylinder is placed within the tire-pot, and is of such less diameterthan the interior of the re-pot as to leave be tween the outer surfaceof said cylinder and the inner surface of the fire-pot a space ofsufcient cubic contents in all directions as to admit of the freecombustion of the fuel, the air being supplied in the usual mannerthrough the grate-bars below and through lateral openings in the hollowcylinder. The object of this arrangement is, while furnishing air freelyto the burning fuel in l any part, to so regulate the draught by theperforated or movable cap that the fuel may be kept in a condition ofactive combustion by closing entirely the upper part of the cylinder,preventing all passage of air upward to the smoke-pipe except it haspassed through the fuel. If, however, it be desired to limit thecombustion it may be perfectly regulated by opening more or less the topor cap of the cylinder, either by opening the perforations, by swingingit on its bearings, or by removing it bodily; thus a larger or smalleramount of the draught passes up through the cylinder up to thesmoke-pipe without passing through the fuel, affording a simple andperfect damper. In the construction of this damper the internal cylindermay be either stationary or movable. In the former oaseit is retained inposition by a central supportingbar or rod, which prevents any lateralmotion or upsetting; or it may be attached to the grate-bars by suitableclamps. If lthe cylinder is to be movable, in which case it may be usedwith any form of grate, it is constructed to slide up and down on acentral tube of wrought iron or other material, which tube is firmlyattached to the upper internal surface of the furnace or stove. Withinthe tube passes a rod, connected at its lower extremity with the lowerpart of the cylinder. At the upper end of the rod is attached a chain,which passes up within the tube, then through an opening in the side ofthe tube at its upper part, over a pulley to the outer side of the furnace or stove at its top, when the cylinder is drawn up. Any of theusual forms of grate-bars can be used, and cleaned in the accustomedmanner. The second part of my invention relates to the form andarrangement of grate to be used in connection with a stationary centralcylinder. By my arrangement the grate can be shaken and even cleaned outas thoroughly as any ordinary grate without disturbing' the cylinder.This is accomplished by making the grate in two parts, turning on thecentral supporting-rod as a center when the lire is be ing shaken, butseparating in four places when it is desired to clean out the fire-potor remove the fire.

Description of Accompanying Drawing.

Figure l is a vertical section of a stove or furnace with myimprovements, showing the internal cylinder and supports and centralsupporting-rod. The actionis through the center of the fuelopening. Fig.2 isa horizontal section of lire-pot and central cylinder, showingcentral supporting-rod and supports from it to walls of centralcylinder. Fig. 3 is a plan. of a grate to be used with stationaryinternal cylinder. Fig. 4 is a vertical section of a furnace or stovewith the internal cylinder movable, showing hollow tube, chain, andpulley. Fig. 5 is a plan of the top or cap of the cylinder, seen frombelow, showing perforations ff and the metallic plate, which acts as avalve to open or close the perforations in the cap. Figs. 6 and 7 aresections of the cylinder and cap, showing openings ff closed in No. 6,but open in No.7. The metallic valve-plate is shown in section. In Fig.7 are shown the lateral openings of the cylinder a: .n and thesupporting-rods'G and I. Figs. 8 and 9 represent same parts, but the capis not perforated; it works upon trunnions, being represented open inFig. 8. Figs. l0 and ll represent the two positions of the grate, Fig.3, in the process of cleaning out, o 'v showing the antero-posterioropenings when center bar b b is moved to the left and b b is moved tothe right; yy showing lateral openings resulting from reversing theaction of the center bars.

AArepresent the walls of a furnace or stove. The part below the level ofthe fuel-opening D, being the tire-pot, is made thicker or lined withrire-brick. B is thesmoke-pipe. C is the ash-box or drawer; E E, thewalls of the internal hollow cylinder; F F, the movable cap or top ofthe same. G is the central supporting-rod7 which is retained in positionby the lateral supporting-bars H H below the grate, which bars areattached at their outer eXtremities to the walls of the ash-box, butmeet in a central portion, which is perforated for the passage of thelower end of the central supporting-rod G. Below them the rod G issecured by a nut or other means. The bars I I pass from the walls E E tothe center supporting-rod, thus retaining the whole in an erect positionand preventing any moving or falling to the side. The movable top or capF F may be constructed either without openings or with openings, and asecondary piece to slide up and close these openings; or it may beconstructed to operate on trunnions, by which means the top may beopened to any desired degree. K K is the grate, situated in the cylinderimmediately below the central cylinder. X X are lateral openings. InFig. 4 M M is the metal rod, which is attached below to the bars I I,passes up within the metallic tube N N, and at its upper extremity isconnected with the chain I), passing over the pulley O. From O the chainpasses through the walls of the furnace or stove, and at S ends in astirrup or other suitable device by which the chain can be drawn out andthe cylinder drawn up. The upper bars I I', gliding along N N, guide thecylinder in drawing up and letting down. When the cylinder is drawn up agrate of the usual construction can be upset and cleaned out.

1n Fig. 3, A A are two or more sections of a grate cast in connectionwith the center bar B B. C C are two or more other sections of thegrate, which are cast with a center-bar exactly similar to B' B', butwhich cannot be seen in this plan, as it is situated immediately beneathit. When these two center-bars are ex'- actly superposed the foursections complete the grate. At the center point Dl an opening is castin each bar, through which passes the center supporting-rod Gr, whichthus serves as a center on which the grate revolves when shaking.

If it be desired to clean out the furnace the center-bars are moved oneto the right the other to the left, by which means the sections A and Cseparate in thev line of the bars. By reversing the action of the barsthe separation takes place laterally.

I claim as my inventionl. The cap or top F F, whether perforated or not,in connection with the cylinder E E, when constructed and arranged tooperate substantially as shown.

2. The grate A B C', when constructed and arranged to operatesubstantially as shown.

FERDINAND E. GHATARD, JR.

Witnesses S. A. MORSE,

